1. Find "Set ‹SIM› lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c202aa1f-ddd6-44f5-95d9-bd81e8225627.png?width=210&height=454)
Press Security & privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1089c197-0129-44b9-b07e-2260262eb6fe.png?width=210&height=454)
Press More settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3a4bfc81-59e7-40dd-a0fc-a1cabb3573aa.png?width=210&height=454)
Press Encryption and credentials.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1a319bb7-c227-48a7-a5f0-aff918d45ff2.png?width=210&height=454)
Press Set ‹SIM› lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c51e5e93-28df-4229-acf9-8cb1879f0051.png?width=210&height=454)
2. Turn use of PIN on or off
Press the indicator next to "Lock SIM card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9eec8db6-570d-4e9a-b854-427935afffa6.png?width=210&height=454)
Key in your PIN and press OK.
If an incorrect PIN is entered three times in a row, your SIM will be blocked. To unblock your SIM, you'll need to key in your PUK. The PUK can be obtained by contacting customer services. Please note: If you key in the wrong PUK ten times in a row, your SIM will be blocked permanently. In this case, you need a new SIM from Vodafone.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-64f6db21-2690-465a-80e1-81e112bf3221.png?width=210&height=454)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9eec8db6-570d-4e9a-b854-427935afffa6.png?width=210&height=454)